Revert "public: update Semantic UI from 2.2.7 -> 2.2.9"

This reverts commit eaab01fa49.

templates/base/head.tmpl

@@ -62,11 +62,11 @@
 	{{end}}
 
 	<!-- Stylesheet -->
-	<link rel="stylesheet" href="{{AppSubUrl}}/css/semantic-2.2.9.min.css">
+	<link rel="stylesheet" href="{{AppSubUrl}}/css/semantic-2.2.7.min.css">
 	<link rel="stylesheet" href="{{AppSubUrl}}/css/gogs.css?v={{MD5 AppVer}}">
 
 	<!-- JavaScript -->
-	<script src="{{AppSubUrl}}/js/semantic-2.2.9.min.js"></script>
+	<script src="{{AppSubUrl}}/js/semantic-2.2.7.min.js"></script>
 	<script src="{{AppSubUrl}}/js/gogs.js?v={{MD5 AppVer}}"></script>
 
 	<title>{{if .Title}}{{.Title}} - {{end}}{{AppName}}</title>